"I demand Bharat Ratna to Sreedharan, who has given a gift to the country in the form of Delhi Metro. I will write a letter to the centre in this regard," Mulayam said on the occasion of foundation laying ceremony of Lucknow Metro.
Sreedharan, who is considered the man behind the success of Delhi Metro, is associated with Lucknow Metro Rail Corporation as a consultant. He was awarded with Padam Vibhushan in May 2008.